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8,565 results for “characterization”
Direct synthesis, characterization, in vitro and in silico studies of simple chalcones as potential antimicrobial and antileishmanial agents
<p>Chalcone represents a vital biosynthetic scaffold owing to its numerous therapeutic effects. The present study was intended to synthesize seventeen chalcone derivatives <strong>(3a-q)</strong> by direct coupling of substituted acetophenones and benzaldehyde. The target chalcones were characterized by spectroscopic analyses followed by their <em>in vitro</em> antimicrobial, and antileishmanial investigations with reference to standard drugs. The majority of the chalcones displayed good to excellent biological activities. Chalcone <strong>3q</strong> (1000 μg/mL) exhibited the most potent antibacterial effect with its zone of inhibition values of 30, 33, and 34 mm versus <em>Staphylococcus aureus,</em> <em>Escherichia coli, and Pseudomonas aeruginosa </em>respectively. The results also confirmed chalcone <strong>3q</strong> to be the most potent versus <em>Leishmania major </em>with the lowest IC<sub>50</sub> value of 0.59±0.12 μg/mL.<em> </em>Chalcone <strong>3i</strong> (500 μg/mL) was noticed to be the most potent antifungal agent with its zone of inhibition being 29 mm against <em>Candida albicans</em>. Computational studies of chalcones <strong>3i </strong>and<strong> 3q</strong> supported the preliminary <em>in vivo</em> results. The existence of the amino moiety and bromine atom on ring-A and methoxy moieties on ring-B caused better biological effects of the chalcones. In brief, the investigations reveal that chalcones (<strong>3i </strong>and<strong> 3q) </strong>can be employed as building blocks<strong> </strong>to discover novel antimicrobial agents.</p>
Physicochemical Characterization of Religious Burning Aerosols in Lhasa on the Qinghai-Tibet Plateau
<p>Data from Lhasa in the Tibetan Plateau, including chemical composition, Infrared spectrum (IR), and light absorption data.</p>
16S rDNA sequencing data for characterizing the endosymbionts of leaf curl plum aphid ( Brachycaudus helichrysi) clones
<p>Asexual lineages often exhibit broad distributions and can thrive in extreme habitats compared to their sexual counterparts. Several hypotheses can be proposed to explain this pattern. Asexual lineages could be versatile genotypes with wide environmental tolerance, enabling their dispersal and persistence across large geographic areas. Alternatively, asexual genotypes could be ecological specialists that thrive in specific environments and outcompete relatives colonizing distantly related areas with similar conditions in the process. Several aphid species feature widespread obligate asexual lineages, commonly known as "superclones". Yet it is often unknown whether these clones are widespead ecological generalists or successful specialists. To explore these hypotheses, we examined climatic niche differentiation among six globally distributed obligate asexual lineages of the cosmopolitan aphid pest, <em>Brachycaudus helichrysi</em>. To insure that we were investigating the aphid genotype niche and not a by-product of their association with endosymbionts mediating thermal tolerance, we first verified that clones hosted similar endosymbiont communities. Subsequently, we conducted multivariate analyses on clone occurrence data on a worldwide scale. Our results revealed that despite their global distribution, <em>B. helichrysi</em> superclones occupy different climatic niches. This study represents the first evidence that aphid superclones distribution can be mediated by distinctive ranges of climatic tolerance.</p>
Using a standardized sound set to help characterize misophonia: The international affective digitized sounds
<p>Misophonia is a condition characterized by negative affect, intolerance, and functional impairment in response to particular repetitive sounds usually made by others (e.g., chewing, sniffing, pen tapping) and associated stimuli. To date, researchers have largely studied misophonia using self-report measures. As the field is quickly expanding, assessment approaches need to advance to include more objective measures capable of differentiating those with and without misophonia. Although several studies have used sounds as experimental stimuli, few have used standardized stimuli sets with demonstrated reliability or validity. To conduct rigorous research to better understand misophonia, it is important to have an easily accessible, standardized set of acoustic stimuli for use across studies. Accordingly, in the present study, the International Affective Digitized Sounds (IADS-2), developed by Bradley and Lang [1], were used to determine whether participants with misophonia responded to certain standardized sounds differently than a control group. Participants were 377 adults (132 participants with misophonia and 245 controls) recruited from an online platform to complete several questionnaires and respond to four probes (arousal, valence, similarity to personally relevant aversive sounds, and sound avoidance) in response to normed pleasant, unpleasant, and neutral IADS-2 sounds. Findings indicated that compared to controls, participants with high misophonia symptoms rated pleasant and neutral sounds as significantly more (a) arousing and similar to trigger sounds in their everyday life, (b) unpleasant, and (c) likely to be avoided in everyday life. For future scientific and clinical innovation, we include a ranked list of IADS-2 stimuli differentiating responses in those with and without misophonia, which we call the IADS-M.</p>
IntelliMan_WP5_Grasping, Manipulation and Arm-Hand Coordination_T5.1_DataFusion and Sensing Technology_characterization of sensing system for grippers_v0
<p>The dataset contains data related to the simulations and experiments presented in the publication:<br>G. Laudante, O. Pennacchio, and S. Pirozzi, “Multiphysics simulation for the optimization of an optoelectronic-based tactile sensor,” in Proceedings of the 20th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO, 2023, pp. 101–110. (DOI: 10.5220/0012166900003543)</p>
Comprehensive study of antimicrobial polycaprolactone/clay nanocomposite films: preparation, characterization, properties and degradation in simulated body fluid
<p>Even though the biodegradability of polycaprolactone (PCL) and its nanocomposites is lower compared to other biodegradable polyesters, this property and good biocompatibility are used for development of materials for drug delivery with a long-term effect. We prepared novel PCL/clay nanocomposite films with antimicrobials chlorhexidine (CH) or octenidine (OCT) combined with ZnO anchored on vermiculite (VER). The intercalation of CH and OCT into the interlayer of VER/ZnOVER was confirmed by XRD, FTIR and SEM. The organically modified nanofillers compared to VER (−46.0 mV) or ZnOVER (−34.9 mV) showed a positive ζ-potential (+30.7 mV (VER_CH), +21.9 mV (VER_OCT), +24.6 mV (ZnOVER_CH)) indicating a relatively stable materials, except ZnOVER_OCT (+8.6 mV), which strongly agglomerated.</p> <p>Thin PCL/clay films were prepared by solvent casting method and the effect of used nanofillers on structural, thermal, mechanical and antimicrobial properties followed by degradation under hydrolytic conditions was studied. The results showed that presence of ZnO significantly decreases thermal and mechanical stability. The nanofillers with the higher hydrophilic character are responsible for the fastest degradation of PCL matrix. Films possessed high antimicrobial efficiency in long time intervals, hence these nanocomposites open new avenues for the possible application of such materials for the drug delivery with a long-term effect.</p>
Presentation in 45th ARO: Multiphoton imaging for 3-D morphometry and characterization of fiber structure of the full human tympanic membrane
<p>This is a poster presentation in t<span>he 45th Association for Research in Otolaryngology Mid-Winter Meeting 2022, and the image files used for the poster.</span></p>
Chemical composition of main agricultural plastics articles used for protected cultivation systems: additive characterization
<p>The folder includes chromatographic and mass spectrometry data of the characterization of additives in agricultural plastics, including mulch films (coded as M), mulch fabrics (coded as C and GT), ropes (coded as R), irrigation tapes (coded as I), seed coatings (coded as O), feed sack (coded as K), bale knitted nets and silage nets (coded as S4), biodegradable shelters (coded as SH), ropes & twines for crop production (coded as R), plant tunnels (coded as L), fertilizers sacks (coded as K), silage film /coded as S1). Conventional polymers including polyethylene (PE), polypropylene (PP), and biodegradable polymers (BIO) have been analyzed.</p> <p> </p> <p> </p>
Characterizing Macroporous Ion Exchange Membrane Adsorbers for Natural Organic Matter (NOM) removal — Adsorption and Regeneration behavior
Open the record for dataset details and reuse information.
Final products from "3D MODELING AS A CONSERVATION TOOL TO CHARACTERIZE ENDANGERED SEASONALLY FLOODED ECOSYSTEMS IN THE VOLTA GRANDE DO XINGU, AMAZON FOREST, PARÁ, BRAZIL"
<p>In these .zip folders, you will find the products generated from flight missions carried out between November 7th to 14th, 2021, in the Volta Grande do Xingu, Pará, Brazil. <br>These results are presented as an integral part of the article titled '3D MODELING AS A CONSERVATION TOOL TO CHARACTERIZE ENDANGERED SEASONALLY FLOODED ECOSYSTEMS IN THE VOLTA GRANDE DO XINGU, AMAZON FOREST, PARÁ, BRAZIL' published on the doctoral thesis "Characterization and monitoring of the flooding dynamics and seasonally flooded environments of the Volta Grande do Xingu through remote sensing", available at <a href="https://doi.org/10.11606/T.106.2023.tde-02022024-211517">https://doi.org/10.11606/T.106.2023.tde-02022024-211517</a>. To understand the data processing methodology that led to these results, please refer to the thesis.<br>Each folder represents a flight mission. They are named by date and flight number (DD_MM_YYYY_FLIGHT#).<br>Within each folder, there are six files resulting from the processed flights: The georeferenced orthophoto and Digital Surface Model, which are raster files (.TIFs), the dense point cloud (.las), and the files composing the 3D Model generated by Agisoft Metashape (extensions .OBJ, .MTL, and .JPEG).<br>The .OBJ file is the primary file for visualizing the model, including the three-dimensional mesh formed by the points of the point cloud and containing geometry, texture, and color information. <br>The .MTL file contains the material description associated with the OBJ file and includes information about the visual properties of the model, such as texture, reflections, and materials. <br>The .JPEG files are the texture images used on the Digital Surface Model to generate the 3D model. This information provides the model with its realistic properties.<br>The .OBJ, .MTL and .JPEG files need to be together in the same folder for a complete 3D Model visualization (i.e., shape, color, and texture).<br>When using this data, please cite Affonso, A. A. (2023). <em>Caracterização e monitoramento da dinâmica de alagamento e dos ambientes sazonalmente alagáveis da Volta Grande do Xingu através de sensoriamento remoto</em>. Tese de Doutorado, Instituto de Energia e Ambiente, Universidade de São Paulo, São Paulo. doi:10.11606/T.106.2023.tde-02022024-211517. Recuperado em 2024-04-14, de www.teses.usp.br</p>
Figure 1 in Genetic characterization of field populations of Culex pipiens Linnaeus, 1758 (Diptera: Culicidae) sampled from the Aegean region of Turkey
Figure 1. Map of collection localities for mosquitoes.
Figure 2. A in Genetic characterization of field populations of Culex pipiens Linnaeus, 1758 (Diptera: Culicidae) sampled from the Aegean region of Turkey
Figure 2. A UPGMA dendrogram based on Nei's (1972) genetic distances among C. pipiens populations.
Light curves included in "Broad-Line Region Characterization in Dozens of Active Galactic Nuclei Using Small-Aperture Telescopes"
<p> </p> <p><strong>This repository is for the paper "Broad-Line Region Characterization in Dozens of Active Galactic Nuclei Using Small-Aperture Telescopes" by Catalina Sobrino Figaredo. It is associated with the manuscript number AAS557954.</strong></p> <p><strong>Table Information:<br></strong><strong>EXTNAME</strong>: Name as a combination of the object name and the year of observation<br>(e.g., HE2128-0221_YEAR=2016)<br><strong>Columns</strong>:<br><strong>MJD</strong>: Modified Julian Date<br><strong>FLUX</strong>: Flux in mJy<br><strong>ERRFLUX</strong>: Flux uncertainty in mJy<br><strong>FILTER</strong>: The observation filter (B_j, V_j, r_s, R_j, 670, 680, 690, SII)</p>
Using Radiogenic Noble Gas Nuclides to Identify and Characterize Rock Fracturing - Data
<p>Data and data processing scripts associated with the paper:</p> <p>"<strong>Using Radiogenic Noble Gas Nuclides to Identify and Characterize Rock Fracturing</strong><strong>" <br></strong></p> <p>submitted to Earth and Space Sciences.</p> <p>Data and data processing scripts are given for each shot in a zipped archive. Metadata describing data and dataprocessing scripts for each shot can be found in a README file in each archive.</p>
Dataset for Characterizing Distributed Machine Learning Workloads on Apache Spark
<div> <div> <div> <ul> <li> <p><span>YasmineDjebrouni,IsabellyRocha,SaraBouchenak,LydiaChen,PascalFelber,Vania Marangozova, and Valerio Schiavoni. 2023. Characterizing Distributed Machine Learning Workloads on Apache Spark. In Proceedings of the 24th International Middleware Conference (Middleware ’23). Association for Computing Machinery, New York, NY, USA, 151–164. </span></p> </li> </ul> </div> </div> </div>
Molecular characterization of Eccrine poroma and porocarcinoma
<p>Annotation of filtered whole exome sequencing data. </p><p> </p><p>Descriptions of column names </p><p>Chr: Chromosome number </p><p>Start: Start position</p><p>End: End position</p><p>Ref: Reference base</p><p>Alt: Alternate non-reference alleles called on at least one of the samples</p><p>Func.refGene: Functional relevance of variant based on RefSeq annotations</p><p>Gene.refGene: Affected gene based on RefSeq annotations</p><p>ExonicFunc.refGene: Exonic variant function based on RefSeq annotations</p><p>AAChange.refGene: Amino acid change for variants based on RefSeq annotations</p><p>Func.ensGene: Functional relevance of variant based on Ensembl annotations</p><p>Gene.ensGene: Affected gene based on Ensembl annotations</p><p>ExonicFunc.ensGene: Exonic variant function based on Ensembl annotations</p><p>AAChange.ensGene: Amino acid change forvariants based on Ensembl annotations</p><p> </p><p> </p>
Non-targeted metabolomics-based molecular networking enables the chemical characterization of Rumex sanguineus, a wild edible plant
<p>This dataset delves into the chemical composition of Rumex sanguineus employing non-targeted metabolomics and Feature-Based Molecular Networking (FBMN), with compound annotation facilitated by SIRIUS. Utilizing UHPLC-HRMS, we conducted comprehensive analyses on samples extracted from Rumex roots, stems, and leaves, further enhancing our insights through molecular networking.</p>
Electron Beam-Induced Artifacts in SEI Characterization: Evidence from Controlled-Dose Diffraction Studies (datasets)
<p>The paper has been published, and the data were updated following the revision. The dataset is now publicly available. All data are in DM4 format, and we recommend using Py4DSTEM or other tools after processing them to h5 format.</p>
Code and Data for Li et al. Characterizing the Speed of Chemical Cycling in the Atmosphere
<p>This Zenodo archive contains the code and data used in the manuscript "Characterizing the Speed of Chemical Cycling in the Atmosphere"</p>
Fiber and Ribbon dimensionnal characterization
<p>Publication details : </p> <p><a><span>Precision Engineering of 3D Fibrillar structures: Controlling Fiber Dimensions via Two-Photon Polymerization</span></a><span><span></span></span></p> <div> </div>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.